Current tax audit threshold matrix: Business (goods/services): ₹1Cr OR ₹10Cr if 95%+ digital transactions. Profession (any): ₹50L OR ₹75L if 95%+ digital. Sec 58 (old Sec 44AD) opting but declaring < 8%/6%: audit regardless of turnover. Sec 58 (old Sec 44ADA) opting but declaring < 50%: audit regardless of receipts. What "95% digital transactions" means: Both receipts (money coming in) and payments (money going out) must be ≥ 95% through banking/digital channels. One large cash payment or receipt can disqualify you from the higher threshold. Example: ₹9.5Cr turnover, but paid rent in cash for 1 month (₹30K): that cash payment is 0.03% of total, likely within 5% cash. Check carefully. The Sec 58 (old Sec 44AD / 44ADA) trap: Business with ₹80L turnover opts for Sec 58 (old Sec 44AD; 8% presumptive = ₹6.4L income). Owner says actual profit is only ₹3L (37% of turnover, less than 8%). Two choices: (1) Declare ₹6.4L (8%) as presumptive, no audit.